Reagent container



Aug. 3 1926. 1,594,370

S. KUBOTA REAGENT CONTAINER Filed Sept. 30, 1924 ggg, 2, 57.

Patented Aug. 3, 1926..

UNITED STATES SEIICEI KUBQTA, OF TOKYO, JAPAN.

REAGENT CONTAINER.

Application led September 30, 1924. Serial No. 740,720.

This invention relates to a test tube particularly designed to containchemical reagents, by which various chemical tests can be easily andaccurately made.

l The test tube according to the invention is so characterized that itcomprises a tubular vessel made of transparent material having at oneend a slender tube closed at its free end, and also having at the otherend a similar slender tube closed at its Tree end and provided with aglobular portion to be covered by an india-rubber cap. The test tube isfurther provided with an inwardly extending ne and longer tube which hasl5 open ends.

The object of this invention is to make various chemical tests at anydesired place by a suitable quantity of chemical reagent, previouslycontained in the test tube.

In the accompanying drawings which illustrate an embodiment of thisinvention,

Fig. 1 is a vertical sectional view of the test tube embodying thepresent invention and containing a chemical reagent and Fig. 2 is aside'elevation, partly In section, in which both end portions are brokenoi at filed marks.

Now referring to the drawings, 1 represents a tubular yvessel containinga suitable 80 quantity of chemical reagent 6, said vessel being made ofa transparent body such as glass, which has at its upper end a slendertube 4 and at its lower end another tube 2 and inner fine tube 5. 2represents a slen 35 der tube closed at one end and connected at theother end to the tubular'vessel 1. 4 represents a similar tube as abovementioned provided with a lobular portion 3 to be covered by anindia-rubber cap 7. l5 reprecents an inner fine tube used for passage ofa liquid to be tested, 8 two filed marks at which the tube is to bebroken oil at the both ends., it being understood that these ends weresealed after the reagent 6 had been placed in the vessel 1.;

The test tube of this invention is to be used as follows:

A suitable test tube containing the desired quantity of the chemicalreagent is first selected 1n accordance with the kind of test to bemade. After breakin 0E, at 8, the closed end portions of the tu es 2 and4, the globular portion 3 is covered with the rubber cap 7. 'llhe end ofthe tube 2 is then immersed into the liquid to be tested and the cap 7then pressed and released to draw a quantityo the liquid into the tube lthrough the tube 5 whereupon the drawn-in liquid will mix with thechemical reagent 6. After the liquid is contained in the tube 1 the tube5 prevents the escape of the liquids so ythat a given quantity thereofwill at all times be maintained within the test tube.

What is claimed is:

A chemical reaction testing device including a test tube having a bodyportion adapted to contain a chemical reagent, said body ortion havingextending outwardly thereilrom at each end a tube closed at its freeextremity and provided with a weakened ortion at said extremity topermit of the Bitter being detached to open said tube, said body portionalso having at one end an 1nwardly extending open tube communicatingwith the adjacent one of the first name 75 tubes and through which aliquid to be tested is drawn into said body fportion.

In testimony whereo I have aiiixed my signature.

SEIICI-II KUBOTA.

